For example:. For example ZIP Codes that start with are assigned to the Navy, and therefore have no geographic location. Similarly, areas without regular postal routes rural route areas or areas with no mail delivery undeveloped areas , are not assigned ZIP Codes. They are based on sparse delivery routes, so the boundary between ZIP Code areas there is indefinite. You can see our instructions on how to find a county by ZIP Code.
The full ZIP Code identifies a small delivery segment such as a street, a city block, a group of apartments, or even an individual address that receives a high volume of mail. Even though the USPS might not provide accurate geocodes for those addresses, Smarty can still provide roof-top level geocodes for most addresses in the US. SmartyStreets is now. Arrow Icon Documentation.
India has 29 states with at least districts comprising of approximately 6 lakh villages, and over cities and towns. The code is six digits long. The first three digits of the PIN represent a specific geographical region called a sorting district that is headquartered at the main post office of the largest city and is known as the sorting office. A state may have one or more sorting districts depending on the volumes of mail handled. The fourth digit represents the route on which a delivery office is located in the sorting district.
The last two digits represent the delivery office within the sorting district starting from 01 which would be the GPO or HO. New Delhi G.
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Punjab: Cong finalises first list of 73 candidates, Channi may contest from 2 seats, say sources. The Census Bureau and many other commercial services will try to interpolate the data to create polygons shapes using straight lines to represent the approximate area covered by a ZIP code, but none of these maps are official or entirely accurate.
They provide a very close approximation of the area covered by a ZIP code. You can easily notice some of the boundary issues when viewing our maps. Very rural areas aren't labeled as belonging to a ZIP code such as much of Nevada and Utah where there are few, if any, addresses to deliver mail. If the address is on the same street as a ZIP code boundary on the map, be sure to search for the full street address to determine the ZIP code instead of relying on the map.
Their purpose is to convey statistical data about regions that are familiar to most citizens. As discussed above, it is difficult to precisely define a geographic area covered by a ZIP code. ZCTAs were developed to account for some of the difficulties in assigning an area to a ZIP code and to precisely define a geographic area. In general, they are updated once every 10 years for the Census. The Census assigns an area to a ZCTA according to census blocks the smallest geographic unit used by the census.
Imagine a city block that makes up a typical census block as pictured to the right. It is bounded on all 4 sides by portions of city streets that each have their own name and addresses. The issue is that census blocks almost always split down the middle of the street.
ZIP codes rarely do because that would require two postal workers delivering mail to that street - one for each side of the street. In the example, one mail carrier may deliver to 3 sides of the block via one ZIP code while another mail carrier delivers mail on the other street in a different ZIP code.
When this happens, the Census Bureau will assign the entire block to a single ZCTA in this case, because the census block is the area that is precisely measured. If you are getting very precise usually a matter of meters, not miles , census block boundaries near the edge of a ZIP code almost always split ZIP codes. The statistics provided by the Census Bureau can give insight into the demographics within the ZIP code.
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